Montbell UL Thermawrap Vest

Well montbells customer service is really good you can always order 2 and send one back. But I guess shipping would be expensive. There is a sizing chart on the website.
I am 6ft 140lbs and have a 30 inch waist I wear a medium and it is perfect.

These tend to run small. I normally wear a size medium in most garments, but based on other people's feedback decided to order a large size thermawrap instead. The size large was a good fit for me (178 lbs, 5' 10.5").

I just ordered the Thermawrap Jacket yesterday and I called Montbell and talked to them about the sizing. The guy on the phone had the jacket, as well as some other office workers, so it was good to be able to ask them about their body weight/height and how their product fits them.

Definitely give them a call.

Thanks guys for your great input – yes did talk (email) store (prolite Gear – on sale for $88) the folks advised it is "small for size", so I have ordered large.